Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 4e83acc55657a5a86f1af2389e1b88ddf84913f3
https://github.com/WebKit/WebKit/commit/4e83acc55657a5a86f1af2389e1b88ddf84913f3
Author: Mikhail R. Gadelha <[email protected]>
Date: 2025-09-11 (Thu, 11 Sep 2025)
Changed paths:
M Source/JavaScriptCore/assembler/ARMv7Assembler.h
M Source/JavaScriptCore/assembler/MacroAssemblerARMv7.h
M Source/JavaScriptCore/wasm/WasmBBQJIT.h
M Source/JavaScriptCore/wasm/WasmBBQJIT32_64.cpp
Log Message:
-----------
[JSC] Fix an !binding.isScratch() assertion failure on 32-bit
https://bugs.webkit.org/show_bug.cgi?id=298157
Reviewed by Justin Michaud.
In 32-bit, we use scratch fp regs to check the bounds of the input of in the
truncSaturated and truncTrapping functions, before emitting the right ccall.
However, the scratch fp registers are still bound when we emit the ccall, which
leads to this assertion failure. These assertions only fail in debug mode and
still provide the correct result in release mode because these fp registers are
not used in the emitted C call.
This PR implements the missing JIT calls for ARMv7 so we don't have to emit the
C calls.
* Source/JavaScriptCore/assembler/ARMv7Assembler.h:
(JSC::ARMv7Assembler::vcmpz):
(JSC::ARMv7Assembler::vmla):
* Source/JavaScriptCore/assembler/MacroAssemblerARMv7.h:
(JSC::MacroAssemblerARMv7::branchFloatWithZero):
(JSC::MacroAssemblerARMv7::branchDoubleWithZero):
(JSC::MacroAssemblerARMv7::convertDoubleToUint64):
(JSC::MacroAssemblerARMv7::truncateDoubleToUint64):
(JSC::MacroAssemblerARMv7::truncateDoubleToInt64):
(JSC::MacroAssemblerARMv7::truncateFloatToUint64):
(JSC::MacroAssemblerARMv7::truncateFloatToInt64):
* Source/JavaScriptCore/wasm/WasmBBQJIT.h:
* Source/JavaScriptCore/wasm/WasmBBQJIT32_64.cpp:
(JSC::Wasm::BBQJITImpl::BBQJIT::truncInBounds):
(JSC::Wasm::BBQJITImpl::BBQJIT::truncTrapping):
(JSC::Wasm::BBQJITImpl::BBQJIT::truncSaturated):
Canonical link: https://commits.webkit.org/299853@main
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